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Java Source Code / Java Documentation » EJB Server resin 3.1.5 » jsdk » javax.servlet.jsp.tagext 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   javax.servlet.jsp.tagext.TagSupport

All known Subclasses:   javax.servlet.jsp.tagext.BodyTagSupport,
TagSupport
public class TagSupport implements IterationTag,Serializable(Code)
Convenient support class for creating tags which don't analyze their bodies. Normally, tags will extend TagSupport instead of implementing Tag directly.


Field Summary
protected  Stringid
     The value of the "id" attribute for the tag, if specified.
protected  PageContextpageContext
     The owning PageContext.

Constructor Summary
public  TagSupport()
     Tags need to implement a zero-arg constructor.

Method Summary
public  intdoAfterBody()
     Processed to check if the tag should loop.
public  intdoEndTag()
     Processed at the end of the tag.
public  intdoStartTag()
     Processed at the beginning of the tag.
final public static  TagfindAncestorWithClass(Tag tag, Class cl)
     Finds an ancestor of a tag matching the class.
public  StringgetId()
     Sets the id attribute.
public  TaggetParent()
     Returns the tag's parent.
public  ObjectgetValue(String name)
     Returns an attribute from the tag.
public  EnumerationgetValues()
     Enumerates the tag's attributes.
public  voidrelease()
     Cleans the tag after it completes.
public  voidremoveValue(String name)
     Removes a value from the tag.
public  voidresetCustomAttributes()
     Resets any custom attributes to the default value.
public  voidsetId(String id)
     Sets the id attribute.
public  voidsetPageContext(PageContext page)
     Stores the page context for the JSP page.
public  voidsetParent(Tag parent)
     If the tag is contained in another tag, this sets the parent.
Parameters:
  parent - the tag to be used as a parent.
public  voidsetValue(String name, Object value)
     Sets the value for a tag attribute.

Field Detail
id
protected String id(Code)
The value of the "id" attribute for the tag, if specified.



pageContext
protected PageContext pageContext(Code)
The owning PageContext.




Constructor Detail
TagSupport
public TagSupport()(Code)
Tags need to implement a zero-arg constructor.




Method Detail
doAfterBody
public int doAfterBody() throws JspException(Code)
Processed to check if the tag should loop. The default behavior returns SKIP_BODY so it does not loop. EVAL_BODY_AGAIN to repeat the body or SKIP_BODY to stop.



doEndTag
public int doEndTag() throws JspException(Code)
Processed at the end of the tag. The default behavior continues with the rest of the JSP. EVAL_PAGE to continue the page SKIP_PAGE to stop.



doStartTag
public int doStartTag() throws JspException(Code)
Processed at the beginning of the tag.

The default behavior returns SKIP_BODY to skip the tag's body.




findAncestorWithClass
final public static Tag findAncestorWithClass(Tag tag, Class cl)(Code)
Finds an ancestor of a tag matching the class. The search is strict, i.e. only parents will be searched, not the tag itself.
Parameters:
  tag - child tag to start searching.
Parameters:
  cl - the class that the tag should implement. the matching tag or null.



getId
public String getId()(Code)
Sets the id attribute.



getParent
public Tag getParent()(Code)
Returns the tag's parent.



getValue
public Object getValue(String name)(Code)
Returns an attribute from the tag.



getValues
public Enumeration getValues()(Code)
Enumerates the tag's attributes.



release
public void release()(Code)
Cleans the tag after it completes.



removeValue
public void removeValue(String name)(Code)
Removes a value from the tag.



resetCustomAttributes
public void resetCustomAttributes()(Code)
Resets any custom attributes to the default value.



setId
public void setId(String id)(Code)
Sets the id attribute.



setPageContext
public void setPageContext(PageContext page)(Code)
Stores the page context for the JSP page.



setParent
public void setParent(Tag parent)(Code)
If the tag is contained in another tag, this sets the parent.
Parameters:
  parent - the tag to be used as a parent.



setValue
public void setValue(String name, Object value)(Code)
Sets the value for a tag attribute.
Parameters:
  name - the name of the attribute.
Parameters:
  value - the new value for the attribute.



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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